Inscription means for cameras and method of photographing written inscriptions.



E. G. KESLING.

INSCRIPTION MEANS FOR CAMERAS AND METHOD 0F PHOTOGRAPHING WRITTENINSCRIPTIONS. APPLlcATloN FILED MAY 22, 19H.

1,276,542. Patented Aug. 2o, 19m

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Emi NEN-rn,

WITN ESBES www. BY

ATTORNEY E. G. KESLING. INSCRIPTION MEANS FOR CAMERAS AND M'ETHGD 0FPHOTOGRAPHING WRITTEN INSCRIPTIONS. APPLICATION FILED MAY 22, I9II.

1 ,276,542. Patented Aug. 20, 191&

3 SHEETS-SHEET 2- J3 /l #5 343 Il] //0 E. G. KESLING. INSCRIPTION MEANSFOR CAMERAS AND ,MEIHoD or PH'oIoGRAPHING-WRIITEN INSCRIPTIONS.

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WITNESSES ATTORN EY UniTED` STATES PATENT OFFICE.

ELMERG. KESLING, 0F BLOOMFIELD, MISSOURI.

INSCRIPTION` MEANS FOB CAMERAS AND METHOD OF -PHOTOG-RAPHING-- WRITTENINSCRIPTIONS. i A i Be it known'th Q -I,ELMER A citizen of the UnitedStates, residing at Bloomiield, in the county of 4Stoddard Aand State ofMissouri, have invented a `new and useful Inscription Meansffor Camerasand Methods of photographing,YlritteninscripA tions, of which thefollowing is a specification.

This invention has reference tol-inscription means for cameras, andmethod ofl photographing written inscriptions, the objectbeing to lightprint written inscriptionsr upon photographically sensitive iilms foridentification or other purposes, whereby the ultimate positive printmay containthe in scription as a title or as ameans of impartinginformation with respect to the scene photographed, or as to otherdata.'

' It has been proposed to produce inscriptions upon photographs byinscribing a specially prepared backingsheet of a roll film,

and then li ht printing the sensitive emulsion of the lm through thebac/king sheet in proper relation to the portion of the film ex.- posedto a' scene or whateverl is photographed upon the film. It has also beenproposed to produce the inscription independently of the sensitive filmand then light' print it upon the film by contact.

. In accordance with this invention Athe inscription is producedentirely separate from and independently of the sensitive film,

whether forming part of a roll iilin, such as employed in roll lmcameras, or in connection with plates, orlm packs,such as are employedin plate cameras. `The inscription is so placed with relation tothesensitive film as to be focused thereupon to the desired size and inthedesired location on the lilm, and an exposure 'is made in the samemanner as is done with respect to the photographing of a scene or someobject.

The invention contemplates means posi' tioned in the camera for readyaccess, whereby an inscription appropriate to the subjectphotographed'may be written asby a leadv pencil, although the' inventionis not limited to such particular writing implement. A lead pencil is aconvenient writing implev ment and produces a sufficiently dense mark,

Specification of Letters Patent.

' especially upona slightly roughened surface, to be considered, lforthepurposes of the invention, as lopaque to actinic light. The inscription.is produced upon a-circum- Patented Aug.'20, 1918..npgneeegasieexayaz,1917. 'serielle-9. 170,214; v 1

scribed area so that the inscription with a surrounding area of butlittle greater extent is light printed upon a corresponding area `of thesensitive surface of the iilm Ywithin the camera and closely adjacent tothe portion of the film designed to receive the light image of theordinary photographic lens of the camera. A focusing means, usually apin hole opening through an opaque plate,

is located between the inscription area and the plane in which thesensitivelm is to be located, while suitable means, such as a shutter,is provided forv admitting or vcutting oli the light through the pinhole aperture, and, moreover, corrective means areV employedV inconnection with the pin hole aperture to equalize the effect of thelight in order to produce proper illumination. throughout the lightprinted area.

The whole inscription means may form a part of the camera and be wholly,or in most part, contained within the walls of the camera, .thearrangement being suchfthatfy the inscription may be applied withoutexposing the sensitized lm to the action ofv `actinic light, and then aproperly focused v image of thev inscription is projected uponthesensitized film at the will of an operator by meansof light reaching theinscriptionfrom thel exterior -of thev camera through light correctingand modifying means and transmitted difusively. past the. inscription ,YI

with the light so corrected and Inodiiied as to produce an evenlyilluminated e'ect upon the sensitized film over the inscription area.

The invention will be best understoodv from a consideration of thefollowing detailed description, taken in connection with theaccompanying drawings forming part In the drawings v Figure 1 is aperspective view of a roll film camera with the invention embodied'therein. t

Fig. 2 is a longitudinal section of one end of the camera kwith theinventlon applied and drawn on a larger scale than Fig. 1, the roll filmwith its backing sheet being shown in edge elevation `and certain otherparts which would be cut by the section being shown in elevation.

Fig. 3 is a. section on the line 3-3 of Fig. 2.

' Fig. 4: is a section on the line 4-4 of Fig. 2. l

Fig. 5 is a section on the line 5+5 of Fig. 2.

the plate type showing one application of the invention thereto. y

Referring firstl to the showing of Figs. 1 to 6 there is indicated acamera 1 indicating a familiar type of roll film cameras needingnospecial description. The camera is pr vided with a door 2, bellows 3and frame 4 fordeining the image area of the camera, and the camera isfurther assumed to be provided with'the'usual parts of a roll filmcamera, which parts, however, are not shown in detail in the drawing,since such showing is unnecessary for an understanding of the invention.Moreover, in Figs. 2 and 5 there is shown a spool 5 for receiving a rollfilm 6, boththe spool and the film being of usual construction, and needno special description. The sensitive surface of the roll film 6 may beassumed to be present at 7, such roll films customarily consisting ofaCelluloid carrier with al sensitized emulsion on one face and a blackpaper or other opaque backing adjacent to the other face.

4The door 2 is usually connected to' the body of the camera by a hinge 8adjacent to. a compartment 9 designed to carry the spool 5, which in theparticular showing of the drawingsv may be considered as the windingspool for the roll film, the latter passing.

a cylindrical body 14 axially connected to parts to be described byrivets 15 constituting pivot pins or trunnions, so that the casing 14may be rocked about its longitudinal axis.V A catch 16 mounted on thecasing of the camera and provided at one end with a nose 17 to engage ina notch 18 in a fixed part of the structure serves to hold the casing 14in a definite position. The latch 16 is under the normal control of aspring 19 tending to hold the nose 17 in the notch 18.

Projecting in a generally radial direction away 'from the casing 14 is awing composed of two substantially parallel parts 20, 21, in close butspaced relation at their adjacent ends, the spacing being such as toaccommodate a stri-p 22 of paper or the like coming from a roll 23 ofsuch paper wound up on itself and housed within the casing 14 andcapable of rotation therein. rThe purpose of the -strip 22 will appearhereinafter. One side of the casing 14 is open, as indicated at 25, theopening being of sufficient length in the direction of the length of thecasing and of suilicient peripheral extent to permit the introduction ofthe roll 23 when the casing 14 is unlatched and turned about its axis tobring the opening'25 outermost, since when the casing 14 is Iin thelatched position, the opening 25 is toward the wall 11, and consequentlythe roll 23 cannot then escapefrom .ing inclined edges 28 approachingtoward the other part 21. The part 20 with its opening 27 thereforeforms a frame, the interior of which defines an inscription area, aswill hereinafter appear, such inscription area being of a size to admitof the writing of an inscription by means of a pencil upon a suitablewriting surface which will also be hereinafter described.

The wing part 21 is so shaped as to provide a box-like receptacle 29 insubstantial parallelism with the part 20 and having an open face towardthe part'20. Through the other face of the part 21, that is, the faceremote from the part 20, is an opening 30 of an area about that of theopening 27, although any exact conformity in areas is not obliga` tory.Within the box 29 there are lodged three plate 31, 32 and 33` in theparticular showing of Figs. 2, 3 and 6. The plates 31 and 33 may be ofclear glass. The plate 32 constitutes a correcting, light modifyingscreen which for purposes that will herein after appear is made thickeror denser at the central portion than at the. ends. Since it is easierto represent a difference in thick-` ness between the middle'lportionand end portions of the lplate 32 than' torepresent a difference indensity, the graphical representation o the. plate 32 is that of a platethicker in the middle portion. than at the ends, 'but it will beunderstood that either arrangement maybe employed. In any event thevariation of the thickness or density and the actual thickness ordensity are governed by the requirements. Any suitable light transmitt'.A substance may be employed and espece y one that'reduces the for thelight modifying 4plateofr screen 32 will appear `further o The wingparts 20 and -21 are in the natureof a door with the casing 1 4, movableabout .its longitudinal axis, serving as a. hinge vat one side of thedoor, so that Vthe door may" be opened and'closed asneeded.' Fast to thebody of the camera a'dJacent to the'hinge 8 of the door 2, is a plate 35Iprovided with an opening 36 corresponding to the'opening'V 27 and insuch position thatf the opening 27 matches the opening' 36 when the'door formed of the parts 20 and 21 is closed. yThe plate 35 has flanges37 forming a seat for the door made up ofthe parts 20 and 21, and whichdoor mayv for convenience, be termed the inscription door, thusvpermitting the latter to seat tightly against the corresponding portionof the camera when in the closed position. Certain of the flanges V37receive the rivets 15 and there may conform to the ends of the casing 14to produce a neat finish and avoid' obtrusive projection of 'said casing14.4 One flange of the ianges 37 is formed with a series of teeth orserrations 38 extending lengthwise of the inscription door inoverlapping relation lto the space between the two parts 20 and 21provided for the passage of the strip 22. The serrations 38 serve as atearing means, whereby portions of the strip 22 may be readily torn.orfy from the main body of the strip as desired. The body of the camerahas a passage 39, therethrough conforming with the passage 36. Thepassages 36 and 39 open into a chamber 40 sep;

arated from the chamber 9 by a division wall 41, which latter extendsfrom the opening 36 toward the roller 10, stopping short of the latter.The chamber 40 ends at a septum or diaphragm 42"dividing the chamber 40from that part of the chamber 9 toward the roller 10, and through theseptum 42 there is produced a small aperture 43 of the character knownin photography as a pin hole and used after the manner of a lens inso-called pin hole cameras. Normally overlying the pin hole 43 andycontainedwithin the chamber 40 and lying against the corresponding faceof the septum 42 is ,a plate 44 serving as a shutter for the pin hole43. The plate '44 is an elongated plate extending vcrosswise of thecamera and mounted on a ivot pin 45 on which the plate may be roc' ed.'On that end of the plate 44 remote from the end serving as a shutterfor the pinhole 43 is lan extension 46 provided `with anangle tongue 47bearing against one lwall of the camera sov and serving as asto'p orabutment for. one v end of a spring 48 'extending across the pivot pin45 and toward the other end of the'septum 42 where the spring bearsagainst a wall of the chamber 40. The arrangement is such that thespring 48 tends' to hold the-shutter 44 in closing relation to the pinhole aperture' 43.. .A rock lever 49 -is .mounted one side wall of thecamera body 'by means` of a guide .vide a finger piece 55`formanipulating the rock lever. inr this way; an operator has ac.-

cess to the rock lever 'from `the exterior of the camera and may rockthe shutter' plate 44 to open the aperture 43 to permit light passingthrough 4the window portion of the inscription door through the aperture43 to a portion of the sensitive face 7 vof the roll film 6.

Pictures produced in roll film and other cameras are usually rectangleslonger in one direction than in the other, while the inscriptions are solocated as to appear, when the plate or iilrn is developed, across oneend of the picture area just outside of such area. For instance, theinscription area may extend, say, about one-fourth of an inch lengthwiseof the hlm in a rollfilm camera, and may be as long as the width of thepic-l ture area of the ilm.

Because of the shallow depth of the casing of a roll ilmcamera'the fieldproduced by the pin hole openingnis restricted and would not ordinarilyextend across the film. To

remedy this diiiculty the pin hole aperture Atube 50, and is providedwith fan angle .end

A pinhole aperture will give a relatively' i sharp image even at soshort a focus as would be represented by about half lthe depth of thecamera or half the distance between the inscription surface and thesensitive surface 7, the inscription surface being located at or closeto the front of the camera and the sensitive surface 7 being locatedclose to the rear of the camera within the casing 1. There is, however,a very'marked diminution of intensity of illumination from the middleportion of the image so formed toward the margins, wherefore the lightimpression upon the sensitized emulsion when strong enough at thecentral portion of the image fades away to almost no effect at themarginal portions even within the width of the film within the camera.It is to overcome this diminishing of illumination toward the marginalportions that the screen 32 is provided. This screen is made t0 diminishthe actinic value of the lightftransmitted at the middleportions and topermit a gradual increase of the actinic value of the light toward themargins over the actinic value at the middle portion. By making thiscorrecting screen compensate for the diminishing illumination toward'themargins of the field of the pin hole aperture, marked evenness ofillumination over the whole effective field is obtained. Since theactu-a1 inscription field is long and narrow, the correcting member 32may also be long and narrow and simply diminish in light retarding valuefrom the center toward the ends, this being found in practice to operatesuccessfully. The correcting of the actinic value may be brought aboutby the use of color capable of varying actinic values, or bycorresponding variations in density or in any way which will accomplishthe purpose. If it be considered that'the plate or strip 32 is a pieceof glass or celluloid, of even color throughout, say red, then if thestrip be diminished in thickness toward the ends, the retarding effectbecomes correspondingly lessened. If the strip 32 be simply a piece ofdarkened glass or celluloid, then the thinning of the strip toward theends has the same effect 0f diminishing its retarding value.

The two parts 20 and 21 may be considered as a one piece structure withthe plate 31 spaced from the wing 20 by liange supports 56, thus leavinga space such as shown at 57 in Fig. 6 for the passage of the strip 22.

Various materials may be used for the strip 22, such as celluloid, orwhite paper, or any light transmitting material of suit- 'able qualitywhich will takepencil marks.

In the case of Celluloid one surface is roughened as by grinding orotherwise, and such roughened surface constitutes a light diusivesurface the same as ground glass or white paper.

When the shutter 44 is closed, which it is under normal circumstances.no light entering the chamber 40l through the inscription door can reachthe sensitive film so that then the door may be opened and carried tothe position' shown in dotted lines in Fig. 2, where it is convenientlylocated for'writing an inscription upon the then exposed surface of thestrip or sheet 22. Such inscription is produced usually by means of apencil as the most convenient writing implement, although any othersuitable writing implement capable of depositing a suitable actinicallyopaque material upon the writing sur.- face may be employed. The sheetor plate v31 serves as a writing table.

Now, the inscription door is closed and is held in the closed positionby the latch 16. The operator having directed the opening 30 toward asuitable source of light, such as an open sky, operates the lever 49 toopen the pin hole aperture 43, whereupon an image of the inscription isprojected upon a proper portion of the roll filmA between the roller 10and that portion of theinterior structure of the camera carrying theframe 4 defining the image field. As soon as the exposure -has been for.a suicient length of time, the shutter is released and preparations maybe made for the next exposure in order. It is customary to make anexposure through the ordinary camera vlens before the inscription ismade, the exposed portion of the film being wound on the receivingspool,.and a small section just beyond that directed to the spool thenreceives the image of the inscription for light printing it on theIfilm.

In order to sharply confine the inscription area on the film anextension 58 of one wall of the chamber 40 is carried toward the path ofthe roll Iilm, and is provided with terminal fingers 59, which togetherwith the extension of the wall 41 and roller 10 mark out with sufficientsharpness the inscription area so that its margins are distinct.

In photographing the inscription upon the film the light on entering thecamera first passes through the correcting means, and then throughdiffusive means to and past the inscription, then through the pin holeaperture or lens, and finally to the sensitivev emulsion, these severalsteps resulting in a light printmg of the inscription, appearing in thenegative and in the The image producing method of the lnvention inprojecting an image of the inscription upon the sensitive film forlightV printing thereon is materially different in results from thecontact method heretofore,- employed,and the extremely small aperture ofthel pin holev permits great latitude of exposure. For instance, with acertain uality of printing light and using the projecting method of thisinvention, the time of eX- posure has been varied from two to fortyseconds with the same inscri tion without l injury -to the-ultimatenegat1ve, but withl the contact printing method the time hasv notexceeded` from two to five seconds. Moreover, the inscription need notbe ap-A plied with any particular care,- since there-f` sultant ypictureofA the inscription appears 'more asa silhouette than asa detailed'pho-20 'tograph. Y u

.As an example of other applications' of the invention there is shown inFig. 7 a .different form of inscription receiving door from that shownin thepreceding figures. There is provided a door of channel frame formwith the channel receiving flanges 61 formed about an opening 62entering a chamber 63 corresponding to the chamber 40. No showing ismade of the pin f hole lens vand parts associated therewith, since theymay be the same as in the preceding figures. `The door 60 has an o ening64 matching the opening 62 and de ing the inscription area. Theopening'64 is formed. by inturned flanges or ledges 65 producing a.pocket for the reception of plates66, 67, respectively, and these platesare held in place by a framelike cap 68 applied to the outer face of thedoor and provided with an 40 aperture 69 corresponding to the passage l64. The door 60 is mounted on a hinge pint-le 70 carrying a spring 71tending to hold the door in the closed position, but permitting it to beopened so as to provide accessvv to that surface ofthe plate 66 towardthe passage 64. The plate 66 has the inscription receiving surface,which is toward the opening 64, of a roughened nature, and consideringthe plate 66 as of glass the inscript1on receiving surface may beground, thus not only providing for writ-ing thereon by a pencil, butproducing diffusion of the light entering the chamber 63. The plate `67may be of a character corresponding to the plate 32, so asto have agradually varying actinic value to correct the aberrations of the pinhole aperture or lens.

The procedure with the structure of Fig. 7 is the' same as in thestructure of Fig. 1 60 and associated figures, and hence needs nofurther description.

In Fig. 8 the application of the invention to a plate camera isindicated. There is shown' a camera bo'X'72 arranged for the re- 65ception of a plate holder 73. in what constiopening82. AAn inscriptionhaving been the film carrier before reaching the film.

4shutter 79 under the'control of a manipulating member extending Ato theexterior of thev casing. The shutter 79 may be considered as similar tothe shutter 44 of vpreceding figures, and is operated vin like manner. A

late 81 with a passage 82 therethrough is n ocatedl at that end ofthechamber? 5 remote from thepartition 76.

l After av plate in thel plate holder 73 has been .exposed to alens-image in theordinary 85 ,working of the camera, the plate holderislifted aV shortV distance with the dark slide still removed, so that asmallportion of the sensitive surface of the plate is opposite the fplaced'upon thel inscriptionv door in a man- `ner'already. described,andthe door againclosed, the shutter 79 is opened, andan image `of theinscription is projected upon lthat portion of the plate' inthe plateholder opposite the opening 82, thus light 'printin the inscriptioninthe 4same' .manner as described with reference to others of thegures.vFinally, the dark slide always provided with plate holders is replaced,and the l plate holder with the exposed plate therein is removedA in theusual manner for subsequent, y development, whereupon the develop'ednegative will lshow the lens image andy the inscription image in properrelation.

' The same procedure is possible with a film pack,but it `is not deemednecessary to illustrate the arrangement since it is to all intents thersame as shown in Fig. 8 with reference ,toI a plate camera.

- The invention may be applied to commercial forms of cameras alreadyyinv ex istence, or the camera may be specially built for the purpose,and for this reason may be slightly longer than cameras as ordinarily115 constructed to accommodate the inscription' space, or the view 'areaof the camera may be correspondingly shortened.

The invention differs from other inscription cameras in that theinscription-receiving structure is placed at the front of the camera,that is, on the same side of the sensitive surface when the film orplate is Within the camera as the view lens of the camera, so that theimage of the inscription is projected by transmitted light from front toback of the camera directly upon the sensitive surface without the lighthaving to pass through an inscription surface and through The focusingmeans is of a fixed focused character and so arranged as to act the sameas avery wide angle and very short focus lens, and is usually sopositioned that the image projected upon the sensitive lm is of the samesize as the inscription, although such particular arrangement is notobligatory.

The inscription surface may be ground or etched or may be made of paperorsome other similar material, with the inscription receiving surface sopositioned when ready for projecting the inscription upon the sensitivesurface that the inscription is toward such surface, and the light imageof the inscription is directly transmitted to the sensitive surface.

With the invention special provision for dimming the intensity of thelight reaching the sensitive surface in lightprinting the inscriptionthereon is not necessary, since this is taken care of by the minuteaperture of the pin hole focusing means or lens.

When ground glass -is used as the inscripytion receiving surface, it maybe repeatedly cleaned for reuse, but with paper or celluloid or thelike, fresh surfaces may be provided for each inscription. i

' While the pin hole focusing means has been found in actual practice tobe highly advantageous, this does not preclude the use of a properlyconstructed lens of light transmittingl material.

What is claimed is l 1. A camera having a view area and an aperturethrough its front wall to one side of the view area, and a door hingedto the camera and normally covering the aperture and provided on theface toward the interior of the camera with an inscription receivingsurface, said door being movable about its hinge axis from theaperture-covering position to an open position, thusexposing theinscription receiving surface for access.

2. A camera having a' view area and an aperture through its front walltoone side of the view area, focusing and exposing means within the camerabetween the aperture and the rear wall of the camera, and a door hingedto the camera and normally covering the aperture and provided on theface toward the interior of the camera with an inscription receivingsurface, said door being movable from the aperture-covering position toan open position, thus exposing the inscription receiving surface toaccess.

3. A camera having a view area and an aperture through its front wall toone side of the view area, focusing and exposing means between theaperture and the rear wall of the camera, and a door normally coveringthe' aperture and provided on the facey toward theinterior of the camerawith an inscription leeiving surface, said door being also provided withcorrecting means for the focusing means andk movablerto an open positionexposing the inscription receiving surface to access.

4. A camera provided with an aperture through its front wall to one sideofthe view area of the camera, and a door having a portion transmissibleof light and normally closing the aperture, said door being providedwith a reservoir for containing a supply of inscription receivingmaterial movable from the reservoir across the light transmitting'areaof the door.

5. A camera having a vlight transmitting aperture through its front wallto one Side of the view area of the camera, and a door hinged to thefront wall of the camera and normally closing the aperture, said doorhaving a reservoir for inscription receiving material located at thehinge portion of the door for movement of the inscription receivingmaterial from the reservoir across the aperture. f,

6. A roll film camera havin a view area and an'aperture through its rontwall to one side of the view area, focusing and exposingmeansbetween-the front and rear walls of the camera in line with theaperture, and a door hinged to the front walland normally closing theaperture, said door .having light transmitting correcting means for thefocusing means, anda reservoir for inscription receiv' g materiallocated at the hinge vportion of glie door for movement of theinscription receiving material across the door.

7. A roll iilmcamera having a view area and an aperture through itsfront wall to one side of the view area, focusing and exposing meansbetween the front and rear walls of the camera in line with theaperture, and al tion of the door for movement of the in-` scriptionreceiving material across the door, said door having means for holdingand guiding the inscription receiving material when the door is openedfor applying the inscription, and when the door 1s closed for exposingthe inscription to light print its image upon a photo sensitive surfacewithin the camera.

' 8. A camera haying'an aperture through its front wall to one side ofthe view area of the camera, means within the camera for projecting animage upon a photo sensitive surface in line with the aperture; andcarrying means for an inscription receiving surface located at the frontwall of the camera in normally covering relation to the aperture, andmovable from such relation to a position exposing the inscriptionreceiving surface to access, and correcting means for the projectingmeans carried byithe aperture covering means.

9. A camera having an aperture through its front wall to one side of'`theview area, focusing means within the camera in line with theaperture, and a carrier for an inscription receiving surface normallycovering the aperture, with the inscription receiving surface toward therear of the camera, said carrier over the portion covering the aperturebeing transmissible of light, and said carrier being movable from theaperture closing position to another position exposing the inscriptionreceiving surface to` access'. v ,v

l10. A photographic camera providedwith an interior focusingvmeans ofpin holey type in position -to project an image upon a chosen portion ofa sensitive surface within the camera adjacent to the image area ofthecamera, and inscription receiving means provided with correcting meansfor the pin lholefocusing means to compensate for the marginaldiminution of light characteristic of pin hole focusing means.

1'1. A photographic camera provided with an interior pin hole focusingmeans of short focus and wide angle with respect to its location withreference to a photo sensitive surface within the camera, Ameans for theproduction and location of an inscriptionin the camera on the side ofthe focusing means remote from the sensitive surface lfor, the

projection of an image of the inscriptiony upon the sensitive surface ona narrow elongated area thereof, and correcting means for the vfocusingmeans to compensate for the characteristic diminution of illuminationtoward' the'pmarginal portions of the Vimage produced by the focusingmeans.

12. A photographic camera provided wit-h an interior pin hole focusingmeans of short focus and wide angle with respect to its location withreference to a photo sensitive surface within the camera, means for theproduction and location of an inscription in the camera on the side ofthe focusing means remote from the sensitive surface for the projectionof an image of the inscription upon the sensitive surface on a narrowelongated area thereof, and .correcting means for the focusing means ltocompensate for the characteristic diminution of illumination toward themarginal portions of the 4image produced by the focusing means, saidcorrecting means comprising actinic retarding r means of diminishingintensity from a portion corresponding to the focal axis ofthe focusingmeans toward the marginal portions of the field of said focusing means.

13. Means for the production of light\ prints of inscriptions upon photosensitive surfaces Withina-photographic camera, comprising focusingmeans of wide angle and short focus `within` 'the camera, means forcorrecting the focusing means to compensate for'the characteristicdiminution of illumination toward the marginal portions of the imageproduced by the focusing means,V inscription receiving' means carried bythe camera and arranged to be located inthe focal axis ofthe focusingmeans for the projection of the image of an applied inscription upon thechosen` portion of the photo sensitive surface, and .means for adfmittingf the-image ofthe inscription produced `by theffocusing means tothe-sensitive `surface-or shuttingit off therefrom, at.

willfii' 7 la. A phftjographic camera provided with a pingholegffocusingaperture within the camera., out'fofjthelrange of the image area ofthecamerazandvpositioned to produce an image u'pon a vchosen portion ofasensitive surface within the camera adjacent to the image area of thecamera, said pin hole aper-` I ture-being elongated in the direction ofthe width of the-camera to produce a narrow elongated image, a shutterassociated with the pin hole aperture, and a' door movable from aposition in Ithefocal axis of thepin hole aperture to a positionbringing a surfacey directed toward the pin hole aperture when in thefocal axis thBIQQ into aposition of access4 exterior tothe camera forthe application of an inscriptionbyla writing implement, and said doorhaving means for thev admission of actinic light'therethrough fand alsocorrecting means for the. pin hole aperture comprising elongatedactinic: re-

t rding means diminishing in intensity from'I a intermediate portiontowardthe ends,

whereby to vcompensate for the diminishing. intensity of illuminationcharacteristic of the image produced by a pin hole aperture toward themarginal portions ofthe image.

15. The method of light printing inscriptions upon a-photo sensitive'surface in a camera, which conslsts 1n produclng the 1nscription upon asurface transmissible ofactinic light, causing the transmission withinthe camera of a light image of the inscrip- ,v tion through a' pin holeaperture on to the sensitive surface, and at the lsame time modifyingthe intensity of the light so transmitted .and'reaching the sensitivesurface ininverse relationl to the variation of intensity of a lightimage between the optical axis and the margins of the eld as zprojectedby a `pin hole aperture.

16. The method of light printing inscriptions upon a photo sensitivesurface in a v camera, which consists in producingthe inscription inlight retarding material upon a light diffusive surface `transmissibleof actinic light, and causing the transmission Within the camera of alight image of the In testimony that I claim the foregoing asinscription through a pin hole aperture on my own I have hereto aiixedmy signature l0 to the sensitive surface, and at the same time in thepresence of tWo Witnesses. modifying the intensity of the light reaoh- 1ing the sensitive surface in inverse propor- BJLMER G' KESLING' tion tothe intensity of the light transmitted Witnesses:

by the pin hole aperture between the optical WINY lWALKER,

-axis and the margins of the image ield. E. A. MosELEY.

